Two trains are involved in a head-on collision near Sloterdijk, Amsterdam, in the Netherlands, injuring 116 people.

On 21 April 2012 at 18:30 local time (16:30 UTC), two trains were involved in a head-on collision at Westerpark, near Sloterdijk, in the west of Amsterdam, Netherlands. Approximately 117 people were injured, one of whom later died in hospital. The collision is thought to have been caused by the driver of one of the trains passing a red signal.